I have heard of a few scientific theories that aim to explain the origin of our universe that I think are interesting. There is String Theory, for example.. Or the theory where the universe started from different, smaller explosions... Or a multiverse theory where our universe may be one of many universes out there that formed in the same way galaxies are born but on a bigger scale. There's even Simulation Theory that people like Elon Musk find possible. Do any of you subscribe to other theories aside from the mainstream Big Bang Theory as an explanation for the origins of our universe? Let me know what you think